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Two complexes,Cu(HnicO)2 1 and Ni(HnicO)2(H2O)2 2 (H2nicO=2-hydroxy-nicolinic acid),were synthesized by hydrothermal reactions and structurally characterized. Complex 1 crystallizes in monoclinic,space group P21/n,with a=8.314(7),b=6.275(4),c=11.283(7),β =98.32(3)°,V=582.5(7)3,Z=2,Mr=339.74,Dc=1.937 g/cm3,F(000)=342,μ=1.908 mm-1,S =1.097,the final R=0.0284 and wR=0.0781 for 1177 observed reflections with I > 2σ(I). Complex 2 crystallizes in monoclinic,space group P21/c,with a=7.438(5),b=12.22(1),c=7.537(5),β=100.07(3)°,V=674.3(8)3,Z=2,Mr=370.95,Dc=1.827 g/cm3,F(000)=380,μ =1.487 mm-1,S=1.041,the final R=0.0335 and wR=0.0779 for 1202 observed reflections with I > 2σ(I). There are extended 3D framework structures in complexes 1 and 2 due to the N–H…O and C–H…O hydrogen bonds. The copper atom in 1 has square planar coordination,while the nickel atom in 2 adopts octahedral coordination geometry. The TG curve shows that complex 2 is stable in solid state to 150 ℃.
Two complexes, Cu (HnicO) 2 1 and Ni (HnicO) 2 (H2O) 2 2 (H2nicO = 2-hydroxy-nicolinic acid) were synthesized by hydrothermal reactions and structurally characterized. Complex 1 crystallizes in monoclinic space group P21 / = 83.32 (3) °, V = 582.5 (7) 3, Z = 2, Mr = 339.74, Complex 2 crystallizes in (D) = 1.937 g / cm3, F (000) = 342, μ = 1.908 mm-1, S = 1.097, the final R = 0.0284 and wR = 0.0781 for 1177 observed reflections with I> 2σ (1), c = 7.537 (5) , β = 100.07 (3) °, V = 674.3 (8) 3, Z = 2 with Mr = 370.95 and Dc = 1.827 g / cm3, F (000) = 380, μ = 1.487 mm-1, S = 1.041, the final R = 0.0335 and wR = 0.0779 for 1202 observed reflections with I> There are extended 3D framework structures in complexes 1 and 2 due to the N-H ... O and C-H ... O hydrogen bonds. The copper atom in 1 has square planar coordination, while the nickel atom in 2 octahedral coordination geometry The TG curve shows that complex 2 is stable in solid state to 150 .